Spray-type dish-washing machine having a circulating pump and plural rotatable strainer means selectively cooperable therewith



Feb; 19, 1952 Filed May 2, 1944 E., W. VARS SPRAY-TYPE DISH-WASHING MACHINE HAVING A CIRCULATING PUMP AND PLURAL ROTATABLE STRAINER MEANS SELECTIVELY COOPERABLE THEREWITH 6 Sheets-Sheet l INVENTOR Feb. 19, 1952 E. w. VARS 2,586,398

SPRAY-TYPE DISH-WASHING MACHINE HAVING A CIRCULATING Y PUMP AND PLURAL ROTATABLE STRAINER MEANS SELECTIVELY COOPERABLE THEREWITH Filed May 2, 1944 6 SheetS Sheet 2 I "1 H /32? I -34 '25 22 70 2 V INVENTOR Feb. 19, 1952 w, v s 2,586,398

SPRAY-TYPE DISH-WASHING MACHINE HAVING A CIRCULATING PUMP AND PLURAL ROTATABLE STRAINER MEANS I SELECTIVELY COOPERABLE THEREWITH Filed May 2, 1944 6 Sheets-Sheet 3 Feb. 19, 1952 w, v s 2.586.398

SPRAY-TYPE DISH-WASHING MACHINE HAVING A CIRCULATING PUMP AND PLURAL ROTATABLE STRAINER MEANS SELECTIVELY COOPERABLE THEREWITH Filed May 2, 1944 6 Sheets-Sheet 4 INVENTOR E. w. VARS ING MA Feb. 19, 1952 SPRAY-TYPE DISH-WASH CHINE HAVING A CIRCULAT PUMP AND PLURAL ROTATABLE STRAINER MEANS SELECTIVELY COOPERABLE THEREWITH 6 Sheets-Sheet 5 Filed May 2, 1944 INVENTOR Feb. 19, 1952 2,586,398

E. W. VARS SPRAY-TYPE DISH-WASHING MACHINE HAVING A CIRCULATING PUMP AND PLURAL ROTATABLE STRAINER MEANS SELECTIVELY- COOPERABLE THEREWITH Filed May 2, 1944 6 Sheets-Sheet 6 INVENTOR Patented Feb. 19, 1952 OFFICE SPRAY-TYPE DISH-WASHING MACHINE HAVING A CIRCULATING PUMP AND PLURAL R T A T MEANS SELECTIV THEREWITH A B L E STRAIN ER ELY COOPERABLE Ethan W. vars, Bellefonte, Pa. Application May 2, 1944, Serial No. 533,736

. 12 Claims. 1

The present invention is designed for washing dishes.

In carrying out the invention, the dishes are placed in the washing compartment, and may be set in position on a rack therein. Sprays of water rotatably applied, strike the dishes from all angles and wash them. The washing water is supplied by means of a pump. The wash water supplying the pump is supplied from a pan which, when the pump is to be operated, is elevated into position so as to immerse the pump.

After the water leaves the dishes, it is drained back to the pan or receptacle carrying the supply of wash water. Preferably the water is heated as it passes over this drain so that as it is recirculated, the water may be maintained at a high temperature.

As the water drains back to the receptacle, it is received in a rotating strainer. The centrifugal action of the strainer forces the water through the straining mesh but retains the particles of solids that may be in the wash water. By reason of this high straining pressure, it is possible to maintain the circulation even though there is quite an accumulation of solids.

The strainer is carried by the pan itself and is moved into driving position as the pan is'elevated. As soon as the pan is lowered after the completion of the operation, the strainer is released from the driving mechanism and can be readily removed so as to empty the solids and the pan as removed is free from the solids collected in the strainer.

In order that the dishes may be rinsed, a secand. pan or receptacle is supplied which is adapted to be brought into position under the pump and elevated so as to immerse the pump in the rinsing water. This rinse water is circulated as long as necessary to completely rinse the dishes and the water is heated as it drains back to the pan so that the rinse water may have avhigh degree of temperature.

Means. are provided for shifting the pans and for elevatingthem and holding them in operative position. Control mechanism is supplied for the driving-motor and timing mechanism is provided soithat the circulation may be made long or short, depending on the condition of the dishes.

Features and details of the invention will appear from the specification and claims.

A preferred embodiment of the invention is illustrated in the accompanying drawings as follows:

Fig. 1 shows a front elevation of the washer;

z Fig. 2 a sectional view through the working portion of the washer;

Fig. 3 a sectional view showing the mechanism for elevating the pan or receptacle; Fig. 3a a detail of a lifting lever; Fig. 3b a perspective view of a latch plate; I Fig. 4 a detail of a shifter for shifting pans; Fig. 5 a perspective view of a shifting rack; Fig. 6 a view partly in section showing the rotating spray driving mechanism, the pump and timing mechansm;

Fig. 6a a plan view of timer gearing;

Fig. 7 a detail view of a strainer;

Fig. 7a a sectional view of the mechanism for driving the strainer;

Fig. 7b a plan view of a splined strainer connection with a rotor head;

Fig. 8 a sectiona1 view of the pan support for the strainer;

Fig. 9 a plan view of the strainer; Fig. 10 a sectional view of an alternate strainer; Fig. 11 an elevation of the draining mechanism;

Fig. 12 a plan view of the rotating nozzle; Fig. 13 a wiring diagram;

disc

Fig. 19 an indicator plate for the shifter;

Fig. 20 a sectional view of the vent in the cover of the washing compartment;

Fig. 21 a plan viewof a part of the ventilating structure; and

Fig. 22 a section through Fig. '17 in the direction of the arrows showing cam and retaining mechanism.

I marks a case. The case is provided with a storage compartment 2, a compartment 3 for the spraying mechanism, and a washing compartment 4. The washing compartment has a cover 5 which is hinged at 6. The cover is provided with a vent. This has the plate 5a with vanes "5b forming a vent passage 50. The plate 5a is clamped to the underside of the cover by a clamping plate 5d. Cross arms 5e are secured to the top by screws if. A clamping bolt 5g passes through the clamping plate 511 and cross arms and is secured by a nut 5h.

Fig. 14 a perspective view of a time setting Fig. 15 a switch controllin shaft for the time These jet openings are arranged at different angles so as to assure a direction of spray that will strike all portions of the dishes. An enlarged Jet II is arranged at each end of the nozzle 8, this jet being thrown to the top of the cover and striking a deflecting plate i2. The deflecting plate surrounds the cover and has variations l3 so that the spray from the deflector plate is given different directions as the jet from the opening ll rotates.

The rotating nozzle is mounted on a hollow spindle i4. The nozzle has separate arms 9a (Figs. 12 and 16). Each arm terminates in a plate shaped base. These bases are clamped against a head i4a. on the spindle 14 by bars D which extend from base to base and are set up by screws Ho. The spindle l4 extends into bearings in a bearing sleeve or tube IS. A drain plate It is arranged under the washing compartment and the bearing sleeve extends through this. A gear [1 is fixed on the spindle I4 and a bearing cap [6a is mounted on a support lBb extending from the plate It. The cap is connected with the support through a bayonet joint l6c (Fig. 6) so that the nozzle assembly can be readily removed from the machine. The gear I'I fixed on the spindle l4 meshes with a gear i8 (see Fig. 6) The gear 18 is fixed on a shaft l3 carried in a bearing 23 supported by the drainage plate and an extension of the frame'ltd. A gear 2| is connected to the shaft [9 through a friction clutch. The shaft 19 has a shoulder l3u. (Fig. 16a) and the opposite face of the gear 2| is engaged by plate 2ia pressed into engagement by a spring 2lb, thus providing the friction for driving the shaft. The gear 2| meshes with a gear 22. The gear 22 is fixed on the rotor shaft 23 of a motor 24, the motor being mounted on a frame IGe which frame is carried by the case.

The tube is extended by a tube 25 to a cen trifugal pump 26 carried by supports 21 extending from the frame. A pump rotor 28 is carried by a shaft 23 connected to the rotor shaft 23 of the motor 24.

A valve 3| is arranged in the harge of the pump and is controlled by a shaft 3 a and a lever arm 3lb. A control rod 3ic extending from the knob 3ld at the front of the case and connected with lever arm 3": provides means for the convenient control of the valve from the control panel of the machine. This valve permits the control of the flow.

The water for washing is provided in receptacles 32 and 33, the receptacle 32 carrying wash water, the receptacle 33 rinse water. These receptacles are introduced through a door la on the case. These receptacles have flanges 34 around the top and these flanges form a support for the pan-being slid onto and supported by bars 35 forming a part of a pan rack 36 (see Fig. 5). The pan rack has rollers 3'! and 38, the rollers 31 operating on a bottom plate 39 and the rollers 38 operating on a track 40 carried by the frame.

A shift plate 4! has rods 42 extending from the shift plate and extending into openings 43 in the bars 35. A shift handle 44 is arranged on the plate 4| and extends through a slot 45 in the case. By manipulating the shifting handle the pan rack may be shifted so as to bring either the washing pan or the rinsing pan under the pump.

An indicator is provided for indicating the location of the pan. An indicating plate 46 is slidingly mounted on the case and has a shoulder 41 in the path of the handle 44.. This plate has the legends Wash, Rinse.- W and R. and

these are brought to windows 48. 43 and 53 respectively indicating the pan locations.

A pan lifting arm 5| has an upright 52, and this upright isprovided with rollers 53 and 54 operating on a vertical track 54a, the track being secured to a cross member of the frame. The arm 5| is sumciently broad to give the proper support to the pans. When the arm 5! is'in its lower position, the pan rack carries the pan over it as they are moved from position to position. A lever 55 extends through a slot 56 in the case and is fixed on a shaft 51 rotatably mounted in the frame. An arm 58 is fixed on the shaft 51 and swings with it. A link 58 connects the end of the arm 58 with an arm 60 pivoted at 60a on the frame. A link 5| connects the arm 60 with the upright 52 so that as the lever 55 is moved up, it lifts the arm 5| and the pan that may be immediately in place over it, elevating the pan into position to submerge the pump and elevating the strainer into engagement with the driving mechanism.

A latch 62 is pivoted on the lever 55 and has a spring 63 which urges the latch toward latching position. The latch engages a plate 64 which is secured on the frame. A push pin 65 is provided for detaching the latch. When the lever is in its upper position, the latch automatically locks and holds the pan in the upper position and when the lever is to be lowered, the push pin is operated permitting the return of the lever.

In order to reduce the extension of the lever, a handle 36 is pivoted at 31 on the end of the lever, the handle and lever having interlocking shoulders 33 limiting the swinging movement of the handle. When the handle is not in operation, it drops down out of the way.

The water as it drains back from the washing compartment is carried by tubes 63 (best shown in Fig. 11) into a strainer Ill. The strainer is mounted on a spindle II which is carried by bearings 12. The bearings are slidably mounted in a sleeve I3 mounted in the pan so that the strainer with its bearings may be readily withdrawn from the sleeve for cleaning purposes.

Clutch jaws 14 are arranged on the upper end of the spindle H. A motor I5 has a rotor 14 (see Fig. 7a) which is connected with a clutch member 11 adapted to lock with the detent 14. The connection between the clutch member and the rotor is through a shaft 18 which is splined in a head I3 and the shaft 13 is yieldingly held in the lower position by a spring 30. As the strainer is elevated and the clutch member 14 reaches the member 11, the spring yields until the clutch elements come into register, and then the engagement is completed. After the parts-are elevated. the operator sets the switch mechanism for the automatic operation. At the completion of the operation the strainer is stopped, the pan isretracted, and this releases the strainer.

An alternative form of strainer is shown in Fig. 10. Here a bag Illa is arranged in the strainer having a wire ring 'lflb at its top which is secured in the upper periphery of the strainer. This bag is removable and thus facilitates cleaning. The edge of the bag is gripped between the ring Ilb diagram (Fig. 13).

these arms and the wall of the strainer and can be thus readily removed for cleaning.

In order to maintain the temperature of the water. electric heaters 8| are arranged under the drain plate I8 and are connected through the wiring with a source of current.

The electric control for controlling the motors and heating element is indicated in the wiring The mechanism is as follows (see Fig. 6a)

A worm 82 is fixed on the upper end of the -rotor shaft 18 (see Figs. 6 and-6a). The worm drives a worm gear 83 having worm teeth 84: It

is mounted on a shaft 85 nalled in bearings 88a.

and the shaft is jour- The worm gear is also rooved at 81 with the pitch of a worm, this groove extending through the teeth. This worm operates on a worm gear 88. The worm gear 88 is fixed on a shaft 88 Journalled in bearings 88a on the frame.

A gear 88 is fixed on the shaft 88 and meshes an internal gear 8I. The gear 8| is fixed on the shaft 82. This shaft is mounted in bearings 94. A bevel gear 88 is fixed on the shaft 82 and meshes a bevel gear 85. The gear 85 is journalled on a shaft 88 and drives the shaft through a friction drive I88 (see Fig. 17), this friction drive comprising a drive plate I 88a fixed to shaft 88. A spring washer I88b presses the plate I88a against the face of gear 85. Gear 85 has an extending hub 81 journalled in bearing 88, the parts of which may be separated to permit of the assembly. The hub extension 81 has a flange 88 which retains the gear in the bearing. An arm MI is fixed to the end of shaft 88. This arm has a projection I 8Ia that extends into a slot I82 in a disc I83. Disc I83 is fixed to shaft I85 by screw I88. The shaft I85 extends through journals I86 and an arm I81 is fixed on the outer end of this shaft. This and a pointer I88a which is adapted to swing over dial I88. The arm has a neutral stop position against a bar I 88b (see Fig. 1).

The shaft I85 has three switch throwing cams II8, III and H2 (see Figs. and 17), operating arm is provided with a handle I88 the switch arms II8, III and II5 respectively, and.

control switches H1, H8 and I I8. Each of the cams has a notch H8, 842, II8b. Notch II8b is longer than notch II8a which is longer than the simple notch I I 8 so that, as shaft I85 returns to neutral position, switch II8 will first be opened, then switch I I8 and finally switch II 1. When the shaft is in neutral position with the arm I81 against the pin I88b, the switches are thrown in contact as the cam arms move out of the notch. The contacts are so arranged on the several switch arms to first close the switch through cam I I8, then the switchesthrough cams III and H2 respectively in sequence.

A plug I28 connects with a source of electrical supply. A wire I2I extends to the switches I I1, III and 8. A wire I22 runs from the switch I I! to the motor 15, a wire I23 from the switch III to the motor 28, and a wire I24 from the switch II8 through a switch 8Ia to the heater 8|. The return wires from the heater, motors 24 and 15, return to the wire I25 which leads back to the plug. Lights I 28 are connected with the line I2I by a wire I21 which extends to a switch I 28 and from this switch to the lights by a wire I28. A wire I88 leads from the lights to the return wire I25.

With this arrangement, it will be seen that as the shaft I85 is thrown by means of the arm I81,

the pointer I88a may be carried over the dial giving the period of operation that may be desired. The farther the shaft is swung, that is, the farther the pointer is carried over the dial. the farther the notches are carried along the switches arms. The shaft I is continuously urged to rotate in a return direction by the friction drive I88 so that immediately the arm I81 is released, this return movement commences.

As before stated, as the arm is swung to set the parts in motion, the strainer is first started, the pump follows, then the heater, and on the return movement the heater is first cut oil, the pump stopped, and then the strainer. This assures the cutting oif of the heater before the flow of water ceases and it assures the operation of the strainer until the last water delivered to the washer has passed through the strainer.

In order to yieldingly maintain a neutral position, the disc I83 is provided with depressions I83a. Rollers I83b are adapted to enter the depressions when the shaft reaches the neutral position. The rollers are journalled in arms I882. The arms are pivotally mounted on pins I83d and are yieldingly drawn together by a spring I 83a.

The general operation of the washer is as follows: The dishes are placed on the rack spaced from the sides of the cover so as to permit the upfiow from the outer or larger jets of the rotating nozzle. The cover is closed. Pans 32 and 33 are introduced through the door into proper position on the rack. The arm 5| is lifted, carrying the pan over it, by means of the lever 55 and when brought to its elevated position, the lever is latched by a latch 62 (Fig. 3a) so as to hold it during the desired washing operation. This upward movement of the washing pan carries the strainer into upper position and engages the driving clutch 11 so that the strainer is ready to operate. The arm I81 is moved to a position giving the desired time of washing. The strainer begins to spin, the water begins to flow into the washer from the pans and the heater begins to heat so as to maintain the heat of the water and, if desired, to increase the temperajure, the water in the pans being ordinarily initially hot.

As the rotating nozzleslbegin to operate. jets of water are directed against the dishes from all directions. -As the large jets extending around the edge just inside the cover progress along the deflector plate I2, the fluted surfaces of the deflector plate give directions to the deflected jet in various directions as the nozzles proceed with their rotation. This is important in that there is a jet action with impact at all points of the dishes so as to assure perfect cleaning. The steam or air which is expanded in the cover is vented so that there is no tendency for the cover to open.

After the proper period of washing, the lever 55 is unlatched and the carriage or rack is moved sidewise by means of the handle or pin 44 which is slid along the slot to bring the rinsing pan 33 into position under the pump and over the arm 5|. The arm 5| is then lifted, lifting the pan 33 into position with relation to the pump and rinsing water'is run through the apparatus in the same mann r as the washing water.

The time for the rinsing may be controlled through the arm I81 at any length of time desired.

At the completion of the rinsing, the lever 55 lower position, the door la is opened and the pans removed. By placing the strainer in the wash pan, the strainer is removed with the wash pan or receptacle so as to be removed from the case with the receptacle and being removable, the strainer may be readily lifted tor empyting and cleaning. The cover is then opened and the dishes removed.

The desired temperature of water, it will be noted, may be controlled by the lengthoi operation, the heating elements being sufllcient to increase the water temperature as the how continues. Thus both as to washing and rinsing, a high degree of temperature may be attained in the water.

In the operation of the apparatus, the return flow or liquid to the enclosed receptacle has a tendency to create sufficient pressure in the receptacle to discharge the liquid so agitated through any openings from the receptacle. In order to obviate this, vent tubes l3! are provided which connect the washing and rinsing compartment 4 with the spray mechanism compartment 3 (see Figs. 2 and 6 also shown in dotted lines, Fig. 11).

The action of the strainer on the material as the material is deposited to the strainer tends to throw the material upwardly and unless restrained, may pass over the top of the strainer to the receptacle. To avoid this a baiiie ring Illa passes inside the strainer when the strainer is elevated.

What I claim as new is:

1. In a dish washer, the combination of a pump, a removable water receptacle for retaining water and adapted to be brought into pumping relation with said pump, a dish support, a spray device for receiving water from the pump, means for returning the water to said receptacle, a rotatable strainer removably mounted on said receptacle disposed in position for the water to pass therethrough in its return to said receptacle, means carried by the washer for drivin said strainer, and devices respectively connected to the strainer and driving means adapted to be operatively connected to one another when the receptacle is moved in pumping relation with the pump.

2. In a dish washer, the combination of a pump, a water receptacle for retaining water and adapted to be brought into pumping relation with said pump, a dish support, a spray device for receiving water from said pump, means for returning the water to said receptacle, a rotatable strainer removably mounted on said receptacle disposed in position for the water to pass therethrough in its return to said receptacle, means carried by the washer for driving said strainer, and devices respectively connected to the strainer and driving means adapted to be operatively connected to one another when the receptacle is moved in pumping relation with the pump, said connecting means comprising a clutch having engaging parts, the parts being yieldable to permit the setting of said clutch after contact of the engaging parts.

3. In a dish washer having a washing chamber, the combination of a pump for forcing a flow of liquid into dish washing relation, a motor driving said pump, a rotatable strainer for receiving the liquid from the washing operation, a second motor driving said strainer, and controls (or the motors throwing the motors into and out 8 or action in sequence to first start said strainer and then said pump.

4. In adish washer having a washing chamber, the combination of a pump for forcing a flow of liquid into dish washing relation, a motor driving said pump, a rotatable strainer for receiving the liquid from the washing operation, a second motor driving the strainer, controls for the motors throwing the motors into and out of action in sequence to first start said strainer and then said pump, and means varying the time during which the motors operate. v 5. In a dish washer having a washing chamber, the combination of a pump for forcing a flow of liquid into dish washing relation, a motor driving said pump, a rotatable strainer for receiving the liquid from the washing operation, a heater for operating on the flowing liquid before said liquid flows into dish washing relation, a second motor driving said strainer, controls for said motors and said heater throwing said motors and said heater into and out of action in sequence to first start said strainer, then said pump, and then the heater, and control means for varying the time period in which said motors and said heater are operated.

6. In a dish washer having a washing chamber, the combination of a pump for forcing a flow of liquid into dish washing relation, a motor driving said pump, a rotatable strainer for receiving the liquid from the washing operation, a heater for operating on the flowing liquid before said liquid flows into dish washing relation, a second motor driving said strainer, and controls for said motors and said heater throwing said motors and said heater into and out of action in sequence to first start said strainer, then said pump, and then said heater, and to cut oil said motors and said heater in reverse sequence.

7. In a dish washer, the combination of a pump, a pair of removable water receptacles, a carriage on which said receptacles are mounted adapted to place either receptacle in register with said pump, means for lifting said receptacle in register with said pump into pumping relation with said pump, a spray device for receiving liquid from said pump, a dish support in position to receive spray from said spray device, means for returning liquid from said spray device to said receptacle in register with said pump, a heater in position to heat the flowing liquid, a rotatable strainer mounted in each of said receptacles and removable therewith and positioned to receive the returning liquid, a motor for driving said pump, a second motor for driving that strainer which is positioned to receive the returning liquid, a case enclosing said receptacles, said carriage, said lifting means, said spray device, said dish support, said return means, said heaters, said rotatable strainers, and said motors, and control devices manually operable from without the case controlling the movement of said receptacles, said motors and said heater.

8. A dishwashing machine comprising the combination of a dish support, a rotary nozzle adapted to direct jets of water upon dishes on said sup-port, a pump for forcing water through said nozzle, a pan beneath said support for collecting water draining from said dishes, said pan having a discharge opening, a removable receptacle for water, means for supporting said receptacle in alignment with the intake of said pump and said discharge opening, and means for lifting said receptacle to bring the water therein about the pump intake, whereby water in said receptacle is forced by the pum through the rotary nozzle upon the dishes and drained therefrom through said pan back to the receptacle.

9. A dishwashing machine comprising the combination of a dish support, a rotary nozzle adapted to direct jets of water upon dishes on said support, a pump for forcing water through said nozzle, a pan beneath said support for collecting water draining from said dishes, said pan having a discharge opening, a pair of removable receptacles, one being adapted to receive wash water and the other rinse water, means for shifting said receptacles laterally to bring one or the other thereof into alignment with the intake of said pump and said discharge opening to select one of said receptacles for cooperation with the pump, and means for lifting the selected receptacle to bring the water therein about the pump intake, whereby water in said receptacle is forced by the pump through the rotary nozzle upon the dishes and drains therefrom through said pan back to the receptacle.

10. A dishwashing machine comprising the combination of a casing including a horizontal wall forming the bottom of a pump chamber and a horizontal rail, a dish support mounted on said casing, a rotary nozzle adapted to direct jets of water upon dishes on said support, a pump within the pump chamber for forcing water through said nozzle, a pan beneath said support for 001- lecting water draining from said dishes, said pan having a discharge opening, a laterally shiftable receptacle support having a pair of rollers engaging said horizontal wall and another pair of rollers-engaging said horizontal rail, a pair of receptacles, one for wash water and the other for rinse water, removably mounted on said receptacle support, means for shifting said receptacle support laterally to select one or the other of said receptacles for cooperation with the intake of said pump and said discharge opening, and means for lifting the selected receptacle to bring the water therein about the pump intake, whereby water in said receptacle is forced by the pump through the rotary nozzle upon the dishes and drains therefrom through said pan back to the receptacle.

11. A dishwashing machine comprising the combination of a casing including a horizontal wall forming the bottom of a pump chamber, a horizontal rail and a vertical rail, a, dish support mounted on said/casing, a rotary nozzle adapted to direct jets of water upon dishes on said support, a pump within said pump chamber for forcing'water through said nozzle, a pan beneath said support for collecting water draining from said dishes, said pan having a discharge opening, a laterally shiftable receptacle support having a pair of rollers engaging said horizontal wall and another pair of rollers engaging said horizontal rail, a pair of receptacles, one for wash water and the other for rinse water, removably mounted on said receptacle support, means for shifting said receptacle support laterally to select one or the other of said receptacles for cooperation with the intake of said pump and said dis- 10 charge opening, a lifter slidably mounted on said vertical rail and having a lifting arm extending forwardly beneath the bottom of the selected receptacle, and means for raising said lifter to bring the water in the selected receptacle about the pump intake, whereby water in said receptacle is forced by the pump through the rotary nozzle -upon the dishes and drains therefrom through said pan back to the receptacle.

12. A dishwashing machine comprising the combination of a casing including a horizontal wall forming the bottom of a pump chamber, a horizontal rail and a vertical rail, a dish support mounted on said casing, a rotary nozzle adapted to direct jets of water upon dishes on said sup port, a pump within the pump chamber for forcing water through said nozzle, a pan beneath said support for collecting water draining from said dishes, said pan having a discharge opening, a laterally shiftable receptacle support having a pair of rollers engaging said horizontal wall and another pair of rollers engaging said horizontal rail, a pair of receptacles, one for wash water and the other for rinse water, removably mounted upon said receptacle support. means for shifting said receptacle support laterally to select one or the other of said receptacles for cooperation with the intake of said pump and with said discharge opening, a lifter slidably mounted on said vertical rail and having a lifting arm extending forwardly beneath the bottom of the selected receptacle, a lever pivoted in the casing at the rear thereof and extending forwardly through the front of the casing, and linkage connecting said lever with said lifter, whereby lifting the forward end of said lever raises said lifter and lifts the selected receptacle to bring the water therein about the pump intake.

.ETHAN W. VARS.

REFERENCES CITED The following references are of record in the file of this patent:

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